[ima-evm-utils PATCH v2 05/13] Update cmd_verify_ima() to define and use a local list of public keys

[Mimi Zohar <zohar@linux.ibm.com>]

Update the static verify_ima() function definition to include
"public_keys".

Replace calling init_public_keys() with the imaevm_init_public_keys()
version.  Similarly replace ima_verify_signature() with the
ima_verify_signature2() version.

Free the local public keys list.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
---
 src/evmctl.c | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/src/evmctl.c b/src/evmctl.c
index 2710a27cb305..3ae79262efbb 100644
--- a/src/evmctl.c
+++ b/src/evmctl.c
@@ -972,7 +972,7 @@ static int cmd_verify_evm(struct command *cmd)
 	return err;
 }
 
-static int verify_ima(const char *file)
+static int verify_ima(void *public_keys, const char *file)
 {
 	unsigned char sig[MAX_SIGNATURE_SIZE];
 	int len;
@@ -999,34 +999,43 @@ static int verify_ima(const char *file)
 		}
 	}
 
-	return ima_verify_signature(file, sig, len, NULL, 0);
+	return ima_verify_signature2(public_keys, file, sig, len, NULL, 0);
 }
 
 static int cmd_verify_ima(struct command *cmd)
 {
 	char *file = g_argv[optind++];
+	void *public_keys = NULL;
 	int err, fails = 0;
 
-	if (imaevm_params.x509) {
-		if (imaevm_params.keyfile) /* Support multiple public keys */
-			init_public_keys(imaevm_params.keyfile);
-		else			   /* assume read pubkey from x509 cert */
-			init_public_keys("/etc/keys/x509_evm.der");
-	}
-
 	if (!file) {
 		log_err("Parameters missing\n");
 		print_usage(cmd);
 		return -1;
 	}
 
+	if (imaevm_params.x509) {
+		if (imaevm_params.keyfile) /* Support multiple public keys */
+			err = imaevm_init_public_keys(imaevm_params.keyfile,
+						      &public_keys);
+		else			   /* assume read pubkey from x509 cert */
+			err = imaevm_init_public_keys("/etc/keys/x509_evm.der",
+						      &public_keys);
+		if (err < 0) {
+			log_info("Failed loading public keys");
+			return err;
+		}
+	}
+
 	do {
-		err = verify_ima(file);
+		err = verify_ima(public_keys, file);
 		if (err)
 			fails++;
 		if (!err && imaevm_params.verbose >= LOG_INFO)
 			log_info("%s: verification is OK\n", file);
 	} while ((file = g_argv[optind++]));
+
+	imaevm_free_public_keys(public_keys);
 	return fails > 0;
 }
 
-- 
2.39.3